The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 07, 2014
Filed:
Jul. 09, 2010
Kenichiroh Matsumura, Tokyo, JP;
Makoto Nakazawa, Tokyo, JP;
Masahiro Yui, Tokyo, JP;
Takehiro Takahashi, Tokyo, JP;
Kenichiroh Matsumura, Tokyo, JP;
Makoto Nakazawa, Tokyo, JP;
Masahiro Yui, Tokyo, JP;
Takehiro Takahashi, Tokyo, JP;
Nippon Steel & Sumitomo Metal Corporation, Tokyo, JP;
Abstract
The present invention provides a galvanized steel sheet including: a steel sheet; and a galvanizing layer provided on a surface of the steel sheet; wherein the galvanizing layer includes an amorphous coating layer having an inorganic oxoacid salt and metallic oxide on a surface layer of the galvanizing layer; the galvanizing layer includes a ζ phase and a δphase; the galvanizing layer includes, by mass, 8 to 13% of Fe; Zn in the metallic oxide exists up to an outermost surface layer of the amorphous layer; and an X-ray diffraction intensity ratio I, which is obtained by dividing an X-ray diffraction intensity of the ζ phase at d=0.126, after removing background intensity, by an X-ray diffraction intensity of the δ1 phase at d=0.126, after removing background intensity, is 0.06 to 0.35.